The daughter of Exceed And Excel made almost every yard of the running under Andrea Atzeni and showed a willing attitude to oblige.
Having travelled sweetly in front, Queen's Pearl kicked for home with two furlongs to run. Exceedingly pushed her hard all the way but Queen's Pearl was always holding that rival and went on to win by a length.
Roger said: "Queen's Pearl has improved with every start and has done it nicely. She has the physique to improve next season and there should be more to come."